Currently I work on localization for a Flex application. From an article I know that you can control the localization with the following FlashVars:
Are there any other FlashVars reserved by Adobe that a Flash/Flex Developer should know about?
Hi,
I recently was playing with ContextMenuItem and found a list of words that cannot be used for a caption or label in a ContextMenuItem. Not sure if it helps.
Save Zoom In Zoom Out 100% Show All Quality Play Loop Rewind Forward Back Movie not loaded About Print Show Redraw Regions Debugger Undo Cut Copy Paste Delete Select All Open Open in new window Copy link Adobe Macromedia Flash Player Settings
Also a hack was suggested here, although I never tried it personally.
This article has a fairly easy tutorial. The conversation in the comments will cover a few best practices for you as well.
Here is an adobe livedoc on runtime localization that you may not have seen yet either.
This final link provides an update on the changes in the localization API made in Flex 3 and documents the deprecated and new classes/methods, etc. (a list with examples is at the bottom of the document).
On a side note if anyone is looking for a tool to help out with translations David Deraedt wrote some nice air apps called Lupo Localization Studio that are reasonably inexpensive.